US2486778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of acid gases from gaseous mixtures
Assignee: Union Oil Company of California
•
Filing: 1945-01-24
•
Granted: 1949-11-01
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:57
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526
Claims Analysis
Total Claims: 0
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US2388156A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |